@Mary419 Thank you so much for chiming in. I'm sorry to hear that it's happening to you too, but glad that I know it is a larger issue than just my personal calendar. I have been speaking to support but they are not super helpful with these kinds of issues...
If I'm not mistaken, I think this is a pro-hosting tool that not all hosts have access to.
Something else I noticed was that some dates that were previously assigned a rule-set, instead of showing the rule-set I assigned, now say "various"... which is strange because I don't think you can apply more than one rule-set, though you can incorporate multiple effects into a single rule-set. I tested them and the rule is still being applied but it's adding to the confusing and uncertainty.
I can tell that they recently changed some of the rule-set interface and features and I imagine it got bugged while they did that work.
As you know the big risk for us as hosts through this issue is having an inaccurate calendar or pricing and winding up with a guest booking something that should be unavailable, or in your case seriously underpriced.
I'd love to send this directly to user experience engineers if that was possible. I will update this thread when the issue is fixed.